May 1903 ] Index to North American Mycology 
119 
Arthonia rhoidis A. Zahlbr. n. sp., ad corticem ramulorum 
Rhoidis laurinae. Beihefte z. Bot. Centralbl. 13:156. 1902. 
Arthopyrenia (sect. Anisomeridium) parvula A. Zahlbr. n. sp., 
ad corticem Umbellulariae. Beihefte z. Bot. Centralbl. 
13:149. 1902. 
Arthur, J. C. The Aecidium as a Device to restore Vigor to 
the Fungus. Proc. 23d Ann. Meeting Soc. Prom. Agr. Sci. 
1902: 65-9. Excerpt distrib. Feb. 1903. 
Arthur, J. C. Cultures of Uredineae in 1002. Bot. Gaz. 35:10- 
23. Jan. 1903. 
Arthur J. C. Problems in the Study of Plant Rusts. [Presi¬ 
dential address, Botanical Society of America.] J. C. Ar¬ 
thur, Bull. Torr. Bot. Club, 30:1-18. Jan. 1903. 
Arthur, J. C. and Holway, E. W. D. The American Uredineae, 
IV. Bull. Lab. Nat. Hist. State Univ. Iowa, 5:311-334. pi. 
1-9. Oct. 1902. 
Arthur, J. C. and Holway, E. W. D. Uredineae Exsiccatae et 
leones. Fascicle IV. [Species 45-60, 49 packets, photo- 
engraved drawings and heliotype reproductions from pho¬ 
tographs.] Dec. 1902. 
Ascomycetum, Nova, Genera Speciesque, see Nova. . . . 
Aspergillus cucurbitaceus Curtis in Herb. syn. of Choanephora 
cucurbitarum, q. v. 
Aspergillus niger [used in the study of the endo-enzyme Inu- 
lase Dean.] Bot. Gaz. 35:24-35. Jan. 1903. 
Aspergillus oryzae, conidia, see Germinative power. . . . 
Ass dung, host to Cephaliophora tropica Thaxter, n. sp., Bot. 
Gaz. 35:158. March 1903. 
Aster multiflorus, host to Camarosporium astericolum E. & B. 
n. sp. Jour. Mycol. 8:176. Dec. 1902. 
Asteroconium Syd. n. gen. [Melanoconiacae.] Ann. Mycolog. 
1:36. Jan. 1903. 
Asteroconium saccardoi Syd. n. sp., in foliis vivis Litsae glau- 
cescentii, Ann. Mycolog. 1:36. Jan. 1903. 
Atkinson, Geo. F. A New Species of Calostoma. Jour Mycol. 
9:14-17. Feb. 1903. 
Bacteria, Flies as Carriers of. [A Laboratory Study]. Eva 
May Shoemaker and Alvin Waggoner. School Science, 
3:16-20. April 1903. 
Bacteria of the Soil in their Relation to Agriculture. Fred¬ 
erick D. Chester. Penn. Dept. Agr. Bull. 98:1-88. 1902. 
